Based on Jane Trahey's memoir Life with Mother Superior, Ida Lupino's 1966 film stars Hayley Mills and June Harding as best friends and mischief-makers Mary and Rachel, two students in an all-girl Catholic boarding school in Pennsylvania. In episodes over several years, the pair drive Mother Superior (Rosalind Russell) to the brink of her patience again and again, but then Mary begins to see a different side of convent life. Watch for Marge Redmond, Portia Nelson, and Mary Wickes, who also played nuns in The Flying Nun, The Sound of Music, and Sister Act, respectively, and an appearance by Gypsy Rose Lee (although not playing a nun).